Case Converter — Title, camelCase, snake_case & More

Switch text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case in one click. Reformat headings and identifiers fast.

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What is Case Converter?

Case Converter rewrites your text into a chosen letter case, from everyday lowercase, UPPERCASE, Title Case, and Sentence case to programming identifiers like camelCase, PascalCase, snake_case, and kebab-case. The programming styles also collapse the spaces between words, so a phrase like "user first name" becomes a single valid identifier. It removes the tedium of retyping a name or heading by hand when you need it in a different convention.

Examples

One phrase across the common cases

Input

hello world

Output

Title Case   -> Hello World
UPPERCASE    -> HELLO WORLD
kebab-case   -> hello-world

The same input, reformatted for a heading, a banner, and a URL slug.

Turn a label into a code identifier

Input

User First Name

Output

camelCase   -> userFirstName
snake_case  -> user_first_name

Spaces are removed and word boundaries drive the casing.

How to use this tool

Paste your text into the box.
Choose the case you want.
Review the converted result.
Copy the output.

When to use it

Converting a column heading like "First Name" into a snake_case database field.
Normalising a messy ALL CAPS paste back into readable Sentence case.
Turning a feature name into a camelCase variable or a kebab-case CSS class.
Fixing a title that was typed in lowercase into proper Title Case.

Tips & gotchas

Title Case here capitalises every word; real editorial title case keeps small words like "a", "of", and "the" lowercase, so review headlines by hand.
Sentence case only capitalises the first letter of each sentence, so proper nouns inside the text may need manual fixing.
camelCase starts lowercase (userId) while PascalCase capitalises the first letter too (UserId) — pick the one your language convention expects.
snake_case and kebab-case strip spaces and punctuation to word boundaries, so an already-hyphenated word may merge unexpectedly.

Features

lowercase and UPPERCASE
Title Case and Sentence case
camelCase and PascalCase
snake_case and kebab-case
Copy the converted text

Specifications

Cases	lower, UPPER, Title, Sentence, camel, Pascal, snake, kebab
Spacing	Programming cases remove spaces between words
Unicode	Works on accented and non-Latin letters

This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.

Frequently asked questions

What is the difference between Title Case and Sentence case?+

Title Case capitalises the first letter of every word, while Sentence case capitalises only the first letter of each sentence.

Why doesn't Title Case match my style guide?+

This tool capitalises every word. Editorial title case usually keeps short articles, conjunctions, and prepositions lowercase, so you may need to lowercase words like "of" or "the" afterward.

What is the difference between camelCase and snake_case?+

camelCase joins words with no separator and capitalises each word after the first (firstName), while snake_case joins them with underscores and stays lowercase (first_name). Both drop the spaces.